SB2026103042 - MFA bypass in Veeam ONE

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Main Vulnerability Database SB2026103042

SB2026103042 - MFA bypass in Veeam ONE

Published: October 30, 2026

Security Bulletin ID SB2026103042
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Enforcement of Behavioral Workflow (CVE-ID: CVE-2026-107671)

CWE-ID: CWE-841 - Improper Enforcement of Behavioral Workflow

CVSSv4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote privileged user to bypass multi-factor authentication and disable it globally.

The vulnerability exists due to improper enforcement of the authentication workflow in Veeam ONE's multi-factor authentication controls when processing global configuration changes before MFA verification is complete. A remote privileged user can use valid Administrator credentials to disable multi-factor authentication globally before completing verification to bypass the additional authentication requirement.


Remediation

Install update from vendor's website.

References